ACTIVELY EXPLOITED

CVE-2017-5638: Apache Struts Remote Code Execution Vulnerability

Facts
VendorApache
ProductStruts
Actively exploitedYes
Added to CISA KEV3 Nov 2021
CISA federal deadline3 May 2022
Ransomware useKnown
Weakness (CWE)CWE-20

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Apache Struts Jakarta Multipart parser allows for malicious file upload using the Content-Type value, leading to remote code execution.

SOURCES

Other Apache flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.